I am not sure what it is you are developing.
Are you developing a TWAIN datasource for a particular digital camera?
Are you developing a TWAIN application that knows how to transfer pictures from any TWAIN datasource for a camera.
You can find sample code for creating both a TWAIN Application and a TWAIN datasource on SourceForge using version 2.0 of the specification.
https://sourceforge.net/projects/twain-samples/
I believe there is some confusion between the version of the file and the specification.
TWAIN_32.dll is distributed by Microsoft. It is included with Windows XP, 2000, Vista. Although the file version is 1.7 This dll still works with the TWAIN application and datasources that are TWAIN compliant up to and including the current 2.0 version of the specification. Although new TWAIN 2.0 applications will be distributing the new DSM from SourceForge. Currently version of the file 2.0.4. Links at the top of twain.org
If you are looking for a kit to help develop using TWAIN.
ObjectTWAIN is a toolkit for creating TWAIN datasources and applications.
http://www.jflinc.com/ObjectTWAIN.html
Soon to be released as TWAIN 2.0 compliant.
Jim Watters
jimw@jflinc.com
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JFL Peripheral Solutions Inc.
http://www.jflinc.com/
Your Expert Source of Custom Software and Services
for TWAIN Applications, Data Sources,
Peripheral Drivers and Support Software.
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